Sash balance and weather strip



R. MARSCHKE.

" f `SSII BALANCE AND WEATHER STRIP.

APPLICATION FILED APR. 20. 192i.

Patented Apr. 4, 1922.

1 Il] d I Swim/Moz Unirse stares PATNT oFF-ics.

SASH BALANCE AND VEATHER STRIP.

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Specication of Letters atent.

jatented Apr. 4, 1922.

Application 1ed Apri1 2G, 1921. Serial No. 462,838;

To ZZ iti/omit may concern Be it known that I, Rmxiionn il. `irlansoHnn,.a citizen of the ,United States. residing at Fargo, in the county ot Cass and tate or' North Dalrotinhave invented certain newand useful lmprovements in Sash Balances and lli/leather Strips, ot which the following is a specilication, reterencebeing had therein to the accompanying drawings.

This invention relates to; a sash balance and weather strip device, and has for its object the construction ot a simple and e'liicient device for eliminating the usual weights ot window sashes, and the provision of means for permitting ready adjustment of a sash within a window-trame and at the same time affording an e'liicient weather strip for prevent-ing dralits ol cold air 'from entering a room between the windowrame and sash, or sashes.

lith this and other objects in view, my invention comprises certain novel combinations, constructions and arrangements of parts as will be hereinafter described, illustrated in the accomfianying drawings, and more particularly pointed. out in the appended claims.

In the drawings:

Figure l is a fragmentary View oi? a windouiirame and two sashes therein, showing my invention partly in section and partly in elevation; the view being taken partly on line 1-1, Fig. Q, and looking in the direction oli the arrows.

Figure 2 is a sectional view, taken on line 2 2, Fig. 1, and lookingl in the direction ot the arrows.

Figurel is a it'ragnientary, sectional, persjiective view oi one oi the gear strips.

Referring to the drawings by numerals, 1 designates the window-frame in which is positioned sashes 2 and 3. lThe Vstructure ,is the same on both sides ot' the Vwindmv-'frame so that it will only be necessary to describe one side, as the other side. is duplicated. In the window-trame 1 is formed a verticallyextending groove el, and fastened in groove il. by screws 5, is al Ushaped guide strip G the screws 5 may be placed in position through apertures T of the substantially U-shaped gear strip 8.

The gear strips S are each provided with a comparatively broad. outer side 9 and a comparatively narrow, inner side 10. In the outer side 9 are formed apertures 11, through which extend screws 12 for fastening the gear strip 8 permanently to a sash, Fig. 2.

I i i l A ir coi partment 13 is formed 1n the window-frame 1, and a cover plate llt is fastened by'screws 15, over the compartment 18.'V

This cover plate is provided with an inwardly-extending, integral hub lfand in this hub V16 is stub shaft 17. Mounted on stub shait 17 is a cogwheel 1S. A; race-way 19 is formed upon the cover plate 14 and the cog-wheel 18, and ball-bearings 2O are placed in therese-ways 19. The'inner side 10 of each or" the gear strips 8 is provided with inwardly-punched sockets 21, in which the cogs ot cogwheel 18 travel.

A dividing strip 2Q is placed between the sashes 2 and 3, and window strips 23 are placed against the sashes `for holding' the sashes in position within the frame 1. W indow strips 23 may be apertured, as at E24, for permitting the screws 12 to be inserted therethrough and placed in the sash. as clearly shown in Fig. 2. l It sometimes occurs that one sash is heavier than another sash, or the sashes slide too freely, and for such reasons l provide a. brake device including ball 25, bearing di rectly against the sasl-, spring QG and retaining plate 27,' the plate 27 keeps the spring in position, causing an inward pressure at all times upon the ball 25, holding the ball in frictional contact with the sash and braking the sash.

lt is to be understood that in a set of two sashes, four gear strips will be used, with two cogwheels 18 meshing with these strips, and that upon raising or lowering either sash, both sashcs will beY adjusted, and upon removing the operators hands trom then .f-zashes, they will normally be retained in the nosition that the operator leaves same. Further, the placing oi the U-shaped guide rips G in the grooves d. and having the Vl s; inner ends oi the gear strips frictiona'lly engaging these guide strips 6, will produce tight weather strips, as well as a slight, trictional, braking action, further assisting in producing a verf-,f etlicient device, as a whole. The ball-bearings 20 assist in making the structure very easy to operate, by overcoming :trictional resistance between the cover' plates and the cogwheels.

lVhile l have described the preferred embodiment of my invention, and have illustrated the same in the accompanying drawings, certain minor changes or alterations may appear to one skilled in the art to which this invention relates, during the extensive manufacture of the same and I, therefore,

reserve the right to make such alterations or changes as shall fairly fall within the scope of the appended claims.

What 1 claim is:

l. In a device of the class described, .the combination of a window-frame provided with a vertically-extending groove, a U- shaped guide strip in the inner end of said groove, a sliding sash within said windowraxne, a substantially U-shaped gear strip in said groove and engaging said guide strip, said gear strip provided With an outer, broad side resting against the outer face of the sash, means detachably fastening the outer, broad side of the gear strip to the sash, and a cogwheel on said Window-frame and engaging said gear strip. Y

2. In a device of the class described, the

combination of a Window-frame provided with a grooveand a compartment, a slidable sash in said window-frame contiguous to said .groove and compartment, a eogwheel in said compartment, a substantially U- shaped gear strip in said groove and bearing against the outer face of the sash,"a Window strip disposed against the frame and sash, screws fastening theV gear strip to the sash, a guide strip in the groove behind the gear strip, screws fastening the guide strips inA the groove, and said gear strip provided with apertures adapted to register with the last# mentioned screws of the guide strip.

In testimony whereof I hereunto affix my signature.

REINHOLD B. MARSCHKE.

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